An alternative particular date and optionally time for which the type can
be defined.

source

<xs:complexType name="alternativeDateType"><xs:annotation><xs:documentation>An alternative particular date and optionally time for which the type can
be defined.</xs:documentation></xs:annotation><xs:attributeGroup ref="ebucore:dateGroup"><xs:annotation><xs:documentation> A set of attributes to express a date or a date period.</xs:documentation></xs:annotation></xs:attributeGroup><xs:attributeGroup ref="ebucore:typeGroup"><xs:annotation><xs:documentation> A set of attributes to define a custom type of date other than
predefined in the schema. </xs:documentation></xs:annotation></xs:attributeGroup></xs:complexType>